Boiler-furnace



(No Model.)

J. GERBER.

B'OILER FURNAGE.

Patented Jan. 24,18 82.

N. PETERS. Pnowlnnagmphnr. wzshmgtnn. IM;

STATES Aram* reich.,

BOILER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 252,656, dated January 24, 1882.

Application tiled September 7, 1881.

To alt whom t may concern: BeA it known that l, JosErH G11RBnR,of Fremont Centre, in the county cf Newaygo and State of Michigan have invented an Improvement iu Boiler-Furnaces, of which the following is a specification.

The nature of this invention relates to certain new and useful improvements in the construction of boiler-furnaces of that class designed for consuming spent tan, sawdust, and other refuse; and theinvention consists in the peculiarconstruction and Various combinations of the parts, all as more fully hereinafter set forth.

Figure l is a sectional perspective. Fig. 2 is a. vertical cross-section through the arch and grate. Fig. 3 is a central vertical longitudinal section of Fig. l.

In the accompanying drawings, which form a part of this specification, A A represent steamboilers,which are set in Ythe usual manner. In front of thesepboilers I place my furnace, which is set in the walls B, access to the grate being had through the doors a a, the rear portion ot' the furnace resting upon the bridge-wall O.

D represents the grate of my improved furnace, and may be of any desired construction adapted for burning tine fuel, such as spent tan, sawdust, &c. Over this grate I place the arch E, which is constructed preferably of boiler-iron, said arch being double and water and steam tight.

F is a pipe through which water is fed into the arch, and G H are pipes running from the arch to the boilers. Through the arch E are formed passages b, through which the lfuel passes to the grate.

In practice the sawdust or other tine fuel is delivered upon thc top of the arch E and falls through the passages'b upon the grate, where i it is consumed,thc heated productsof combustion passingover the apron I beneath the boiler. By this construction I present all the boiler- (No model.)

surface to the action of the heat, while I am enabled to burn matter as fuel that is ordinarily called refuse, and that cannotbeburned in ordinary furnaces. The arch being keptfull of water, prevents the fuel from being ignited above it, while it throws off sufficient heat as to dry, or partially so, the fuel before it passes to the grate. At the same time it performs the functions of a heater for heating the water before it passes to the boiler.

If desired, the arch E may be constructed of brick and built solid, with metal passages b inserted. This construction will be preferable in some cases.

I am aware that it is not new to provide a furnace with a brick arch having openings to allow the feeding of fuel to agrate below, and I am also aware that it is not new to place a waterarch in a furnace tire-box for the purpose of heating the feed-water, and therefore I do not broadly claim either of the constructions named, my invention being confined to a water-arch supported midwayin the furnacewalls and provided with feed-openings, wherebyit is adapted to support and drya quantity of fuel without burning the same before it passes the feed-openings,and at thesame time to heat the feed-water.

What I claim as my invention is- In a furnace, the water-arch E, supported midway between the grate and top of the furnace, and provided with openings b, leadingto the tire-box and connected to the boiler by suitable pipes, whereby it is adapted to support and dry refuse fuel without burning the Asame before it passes the feed-openings,and at the .same time to heat the feed-water,substantially as shown and described.

JOSEPH GERBER.

Witnesses:

A. 0.,.WH1TE, O. SANDE MoNABB. 

